/**
 * 格式化日期
 * @param dateString ISO 8601格式的日期字符串
 * @returns 格式化后的日期字符串 (YYYY-MM-DD HH:mm)
 */
export function formatDate(dateString?: string): string {
  if (!dateString) return '';

  const date = new Date(dateString);
  const year = date.getFullYear();
  const month = String(date.getMonth() + 1).padStart(2, '0');
  const day = String(date.getDate()).padStart(2, '0');
  const hours = String(date.getHours()).padStart(2, '0');
  const minutes = String(date.getMinutes()).padStart(2, '0');

  return `${year}-${month}-${day} ${hours}:${minutes}`;
} 